Thevetia peruviana (Family: Apocynaceae) in the control of slug and snail pests

Memórias do Instituto Oswaldo Cruz

A. Panigrahi¹  S. K. Raut¹ 

[1] ,University of Calcutta Department of Zoology Ecology and Ethology LaboratoryCalcutta,India

关键词: Thevetia peruviana;    fruit kernel extract;    pest control;    slugs;    snails;   

DOI  :  10.1590/S0074-02761994000200024

来源: SciELO

【 摘 要 】

An aqueous extract prepared from Kernels of the fruit of Thevetia peruviana (Pers.) Schumann (Family : Apocynaceae) was found under experimental conditions, to be toxic ti the slug Laevicaulis alte (Férussac) and the snail Achatina fulica Bowdich, the important agrihorticulturalpests of Indo-Pacific countries. Concentrations as low as 1% (w/v) killed all the slugs exposed in less than 981.00 (± SD 22.76) min, and 2% of the extract killed 100% of the slugs L. alte and 50%, 50% and 30% of the snail A. fulica in between 92.34 (± SD 6.63) - 321.33 (± SD 4.14) and 271.20 (± SD 17.54) - 298.26 (± SD 16.69) min respectively. The most effective concentration of the extract was 20%; it killed 100% of exposed slugs and snails within a short time(40-50 and 90-1440 min respectively) when the extract was exposed on the soil in experimental trays or when it was applied to potato slices offered as food to the gastropods.

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